Mac OS X: If you like OS X's new Launchpad feature but it feels a little cluttered, Launchpad Control will clean it up by hiding certain apps.

Launchpad Control is pretty self-explanatory: if there are some apps you don't want in Launchpad (like menu bar apps that are always running anyway, or apps you'd never launch on their own), you can hide them by opening up a preference pane and unchecking a box. The app will still be available to you in the Finder if you need it, and you can always add it back to Launchpad if you so desire—it just helps clean things up a bit when you're trying to browse your Mac apps.